Pact

Testing Strategies for Modern Microservices Modern microservices divide a product into many small parts. This helps teams move fast, but it also creates more failure points. A solid testing strategy must cover code, contracts, and how services work together in real environments. The goal is to catch issues early and keep deployments smooth. A practical approach uses layers that fit distributed systems. For example, combine these: Unit tests for pure logic Service-level tests for internal components Contract tests for API agreements Integration tests across service boundaries End-to-end tests for user journeys Non-functional tests like performance and security Contract tests reduce surprises when a service changes. They confirm that a provider’s API still matches what a consumer expects. Tools like Pact or OpenAPI can help. Keep contracts in source control and run them in CI. Use stub servers to simulate collaborators so tests run fast and deterministically. ...